<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8" />
		<title></title>
	</head>
	<body>
		<canvas id="canvas" style="border: 1px solid #aaa; display: block;margin: 0 auto;">
			IE10以下不支持
		</canvas>
	</body>
	<script>
		var tangram = [
			{p:[{x:0,y:0},{x:800,y:0},{x:400,y:400}],color:"#caff67"},
			{p:[{x:0,y:0},{x:400,y:400},{x:0,y:800}],color:"#67becf"},
			{p:[{x:800,y:0},{x:800,y:400},{x:600,y:600},{x:600,y:200}],color:"#ef3d67"},
			{p:[{x:600,y:200},{x:600,y:600},{x:400,y:400}],color:"#f9f51a"},
			{p:[{x:400,y:400},{x:600,y:600},{x:400,y:800}],color:"#a594c0"},
			{p:[{x:200,y:600},{x:400,y:800},{x:0,y:800}],color:"#fa8ecc"},
			{p:[{x:800,y:400},{x:800,y:800},{x:400,y:800}],color:"#caff67"}
		]
		window.onload = function () {
			var canvas = document.getElementById('canvas');
			canvas.width = 800;
			canvas.height =800;
			
			var context = canvas.getContext('2d');
			
			for ( var i =0 ; i<tangram.length; i++) {
				draw (tangram[i],context);
				
			}
			
		}
		function draw (piece,cxt) {
			cxt.beginPath();
			cxt.moveTo(piece.p[0].x,piece.p[0].y);
			for (var i =1; i<piece.p.length;i++){
				cxt.lineTo(piece.p[i].x,piece.p[i].y);
			}
			cxt.closePath();
			cxt.fillStyle = piece.color;
			cxt.fill();
		}
	</script>
</html>
